C515A Datasheet, PDF (3/58 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

8-Bit CMOS Microcontroller
C515A
Advance Information
• Full upward compatibility with SAB 80C515A/83C515A-5
• Up to 24 MHz external operating frequency
– 500 ns instruction cycle at 24 MHz operation
• 32K byte on-chip ROM (with optional ROM protection)
– alternatively up to 64K byte external program memory
• Up to 64K byte external data memory
• 256 byte on-chip RAM
• 1K byte on-chip RAM (XRAM)
• Six 8-bit parallel I/O ports
• One input port for analog/digital input
• Full duplex serial interface (USART)
– 4 operating modes, fixed or variable baud rates
• Three 16-bit timer/counters
– Timer 0 / 1 (C501 compatible)
– Timer 2 for 16-bit reload, compare, or capture functions
(further features are on next page)
Oscillator
Watchdog
Watchdog
Timer
XRAM
1Kx8
RAM
256 x 8
Port 0
I/O
T0
Port 1
I/O
10-Bit
Power ^{A / D Converter}
T2
CPU
USART
Saving
Modes
T1
Port 2
I/O
Port 6 Port 5 Port 4
ROM
32 k x 8
Port 3
I/O
Analog / I / O I / O
Digital
Input
Figure 1
C515A Functional Units
Semiconductor Group
3
MCA03239
1997-10-01